Force user input on Subject field of Reply form?

I am constantly wishing there was a happy medium between flat and threaded viewing of posts. If there were a way to "encourage" everyone to fill this field in, it would make scouring the posts a lot easier (for me anyway). Any thoughts?

Cory

The features you have requested are not under our control. I recommend you discuss it with the people who write the UBBThreads software, over at Infopop.

Done